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Cressdnaviricota is a phylum of viruses with small, circular single-stranded DNA genomes and encoding rolling circle replication-initiation proteins with the N-terminal HUH endonuclease and C-terminal superfamily 3 helicase domains.
The first animal CRESS-DNA virus to be characterized was the porcine circovirus in 1974, and in 1977, the first genome of an ssDNA virus, the Bean golden mosaic virus, was detailed. Beginning in the 1970s, the families of related members in Monodnaviria began to be organized, Parvoviridae becoming the first ssDNA family recognized with ...
The redondovirus genome is circular, and by analogy to other CRESS viruses likely single stranded. Genomes range in size from about 3.0 to 3.1 kilobases. The genome encodes three inferred proteins: [citation needed] A Rep protein that likely initiates rolling-circle DNA replication. A Cap protein that likely self-assembles to yield icosahedral ...
Smacoviridae is a family of single-stranded DNA viruses. [1] The genomes of this family are small (2.3–2.8 kilobases in length). The name Smacoviridae stands for 'small circular genome virus'. [2] The genomes are circular single-stranded DNA and encode rolling-circle replication initiation proteins (Rep) and unique capsid proteins. As of 2021 ...
However, the two capsids making up the virus are fused; divided, the capsids would be 15 nm (1.5 × 10 −5 mm) in length. Other environmentally characterized ssDNA viruses such as CRESS DNA viruses, among others, can have genomes that are considerably less than 2,000 nucleotides. [12] [13]
Orthopoxvirus particles. A DNA virus is a virus that has a genome made of deoxyribonucleic acid (DNA) that is replicated by a DNA polymerase.They can be divided between those that have two strands of DNA in their genome, called double-stranded DNA (dsDNA) viruses, and those that have one strand of DNA in their genome, called single-stranded DNA (ssDNA) viruses. dsDNA viruses primarily belong ...
The names of realms consist of a descriptive first part and the suffix -viria, which is the suffix used for virus realms. [1] The first part of Duplodnaviria means "double DNA", referring to dsDNA viruses, [2] the first part of Monodnaviria means "single DNA", referring to ssDNA viruses, [3] the first part of Riboviria is taken from ribonucleic acid (RNA), [4] and the first part of ...
Brisavirus has a CRESS DNA genome with 3 open reading frames that are inversely oriented that encode for the capsid and Replication-associated protein protein with a small and larger intergenic region. [4] They replicate using rolling-circle replication like other CRESS viruses. [4]